The project was not built due to "Could not delete

Severity and Description	Path	Resource	Location	Creation Time	Id
The project was not built due to "Could not delete '/fuNan_conv/tsconv/WEB-INF/classes/com'.". Fix the problem, then try refreshing this project and building it since it may be inconsistent		fuNan_conv	Unknown	1264052996609	20119

根据提示，项目不能正常发布编译时tomcat无法删除'/fuNan_conv/tsconv/WEB-INF/classes/com'目录...我连work文件夹都删除了，重新发布还是没有解决问题。
最后我新建了工作路径，把此项目重新导入该workspace下。
程序正常运行了，可能是workspace相关属性丢失了或是损坏了
可以参见我发布的另一个类似问题 http://jc-dreaming.iteye.com/admin/blogs/576185